16
Variable Speed Drive
This covers only operational isses with the VFD. For technical issues with the unit, please refer to the factory
user manual provided to you by the VFD manufacturers.
Overheating
The VFD can overheat if it is placed in a position of extreme heat or lack of sufficient air circulation. Make sure
to keep the unit in an ambient temperature b15F (-9C) to +105F (40C.) If the VFD overheats, stop the
sander and let the VFD cool. Provide a cooler ambient running conditions or stop using the sander.
Unit will not respond to speed changes
Check the connections on the back of the potentiometer and on the input connections on the drive.
Potentiometer is 10k ohm max of resistance. Refer to VFD manufacturer user manual and check parameters to
view minimum and maximum set frequencies. Minimum frequency should be 30 and maximum should be 100.
Unit will not start with foot pedal
Refer to diagram and check connections inside foot pedal and on input connections of the drive.
VFD tripping breaker
Replace VFD.
Summary of Contents for DeBurr-It! 248-3
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